ReportStatusCodeRouterPei.c revision 4fd606d1f5abe38e1f42c38de1d2e895166bd0f4
Report Status Code Router PEIM which produces Report Stataus Code Handler PPI and Status Code PPI. Copyright (c) 2009 - 2011, Intel Corporation. All rights reserved.<BR> This program and the accompanying materials are licensed and made available under the terms and conditions of the BSD License which accompanies this distribution. The full text of the license may be found at THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED. Worker function to create one memory status code GUID'ed HOB, using PacketIndex to identify the packet. @param PacketIndex Index of records packet. @return Pointer to the memory status code packet. // Build GUID'ed HOB with PCD defined size. Register the callback function for ReportStatusCode() notification. When this function is called the function pointer is added to an internal list and any future calls to ReportStatusCode() will be forwarded to the Callback function. @param[in] Callback A pointer to a function of type EFI_PEI_RSC_HANDLER_CALLBACK that is called when a call to ReportStatusCode() occurs. @retval EFI_SUCCESS Function was successfully registered. @retval EFI_INVALID_PARAMETER The callback function was NULL. @retval EFI_OUT_OF_RESOURCES The internal buffer ran out of space. No more functions can be @retval EFI_ALREADY_STARTED The function was already registered. It can't be registered again. // If current total number of handlers does not exceed 64, put new handler // If the function was already registered. It can't be registered again. // If the total number of handlers in current packet is max value 64, // search an entry with NULL pointer and fill new handler into this entry. // If new registered callback is added as a new entry in the packet, // increase the total number of handlers in the packet. Remove a previously registered callback function from the notification list. ReportStatusCode() messages will no longer be forwarded to the Callback function. @param[in] Callback A pointer to a function of type EFI_PEI_RSC_HANDLER_CALLBACK that is to be @retval EFI_SUCCESS The function was successfully unregistered. @retval EFI_INVALID_PARAMETER The callback function was NULL. @retval EFI_NOT_FOUND The callback function was not found to be unregistered. // Set removed entry as NULL. Publishes an interface that allows PEIMs to report status codes. This function implements EFI_PEI_PROGRESS_CODE_PPI.ReportStatusCode(). It publishes an interface that allows PEIMs to report status codes. @param PeiServices An indirect pointer to the EFI_PEI_SERVICES table published by the PEI Foundation. @param CodeType Indicates the type of status code being reported. @param Value Describes the current status of a hardware or software entity. This includes information about the class and subclass that is used to classify the entity as well as an operation. For progress codes, the operation is the current activity. For error codes, it is the exception.For debug codes,it is not defined at this time. @param Instance The enumeration of a hardware or software entity within the system. A system may contain multiple entities that match a class/subclass pairing. The instance differentiates between them. An instance of 0 indicates that instance information is unavailable, not meaningful, or not relevant. Valid instance numbers start with 1. @param CallerId This optional parameter may be used to identify the caller. This parameter allows the status code driver to apply different rules to @param Data This optional parameter may be used to pass additional data. @retval EFI_SUCCESS The function completed successfully. Entry point of Status Code PEIM. This function is the entry point of this Status Code Router PEIM. It produces Report Stataus Code Handler PPI and Status Code PPI. @param FileHandle Handle of the file being invoked. @param PeiServices Describes the list of possible PEI Services. @retval EFI_SUCESS The entry point of DXE IPL PEIM executes successfully. // Install Report Status Code Handler PPI // Install Status Code PPI. PI spec specifies that there can be only one instance // of this PPI in system. So first check if other instance already exists. // If no other instance exists, then just install the PPI. // If other instance already exists, then reinstall it.